J Mater Sci Technol ›› 2001, Vol. 17 ›› Issue (S1): 101-104.

• Research Articles • Previous Articles     Next Articles

Microstructure evolution of Ti/BN powder blend during ball milling and heat treatment

Jianlin LI, Leao HU, Yong ZHONG   

  1. Institute of Composite Materials, Shanghai Jiao Tong University, Shanghai 200030, China
  • Received:2000-12-08 Revised:2001-03-01 Online:2001-10-28 Published:2009-10-10
  • Contact: Jianlin LI

Abstract: Ball milled Ti/BN composite powder was prepared by high energy ball milling for 40 h, using Ti and BN (the molar ratio of Ti/BN is 3:2) as starting materials. The as-milled composite powder consists of TiN, Ti and amorphous phase. TiN formed while the milled powder was annealed at 400℃. The heat treatment at 700℃ led to the formation of TiB2 and TiB. The nanocrystalline Ti and amorphous phase converted to TiN and TiB2 when the powder was heated to 1300℃.

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